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Peristalic pump having hinged backing plate

a hose pump and hinge technology, applied in the direction of flexible member pumps, engine components, positive displacement liquid engines, etc., can solve the problems of hose tolerances, manufacturing and mounting tolerances in mechanical parts, and faults due to hose tolerances as well as tolerances in hoses

Inactive Publication Date: 2007-10-30
W O M WORLD OF MEDICINE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a peristaltic pump that improves delivery pressure and rate by using an elastically deformable supporting surface and a pre-shaped pressure arched element. This ensures that the hose is clasped between the roller and the pressure arched element by the same continuous amount in each position of the roller with respect to the pressure arched element. The elastic deformation runs with the roller through the pressure arched element, so that the clasping force always acts perpendicular to the roller. This compensates for greater tolerances in the hose, production and assembly, which results in considerable cost savings in manufacturing the hose pump. The unstressed condition corresponds to a mounting position of the pressure arched element in which a hose can be inserted, while the stressed condition corresponds to an operating position in which the supporting surface is moved in directions towards the rotation axis of the roller wheel relative to the mounting position. The pressure arched element is mounted or fixed in the region of its two ends, but other than that it is free, i.e. it is not supported by any other components. The invention overcomes the disadvantages of previously known hose pumps.

Problems solved by technology

The band made of a metallic material, plastic or fabric has the disadvantage of too high elasticity.
In spite of this, faults occur due to hose tolerances as well as manufacturing and mounting tolerances in the mechanical parts.
The disadvantage here is that the spring force is directional and only provides the hose with a precise impression at that point of the roller that is in the line of the force.
This leads to an only limited compensation for tolerance.
It is not possible to generate high pressures for high delivery rates.

Method used

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  • Peristalic pump having hinged backing plate
  • Peristalic pump having hinged backing plate
  • Peristalic pump having hinged backing plate

Examples

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examples of embodiments

[0009]The following examples serve to further explain the invention with the help of the figures shown. The figures represent the following:

[0010]FIG. 1: perspective representation of the front plate of the device housing for two peristaltic hose pumps, without inserted flexible hoses, whereby the left hose pump is open and the right hose pump is closed;

[0011]FIG. 2: perspective representation of the front plate according to FIG. 1, without the covers for the two hose pumps;

[0012]FIG. 3: top view of the representation shown in FIG. 2, with an inserted hose;

[0013]FIG. 4: perspective front view of the pressure arched element of a hose pump, and

[0014]FIG. 5: perspective rear view on to the pressure arched element with clamping disk.

[0015]FIGS. 1 through 3 show the front plate 15 of a device housing for two peristaltic hose pumps 20, 21, whose roller wheels 1 are each equipped with four rollers 2 and are driven by electric motors 16 mounted on the rear side of the front plate 15. Assign...

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Abstract

A peristaltic hose pump comprising a roller wheel, which can rotate about a roller wheel axis and which has rollers that are mounted on the roller wheel. The rollers roll along a circular path having a certain radius with respect to the roller wheel axis. The peristaltic hose pump also comprises a pressure arched element with a supporting surface, whereby the supporting surface extends along a circular path having a certain radius around the rotation axis of the roller wheel. In addition, a flexible hose can be inserted between the supporting surface and the rollers of the roller wheel.

Description

SCOPE OF THE INVENTION[0001]The invention relates to a peristaltic hose pump comprising a roller wheel, which can rotate about a roller wheel axis and which has rollers that are mounted on the roller wheel. The rollers roll along a circular path having a certain radius with respect to the roller wheel axis. The peristaltic hose pump also comprises a pressure arched element with a supporting surface, whereby the supporting surface extends along a circular path having a certain radius around the rotation axis of the roller wheel. In addition, a flexible hose can be inserted between the supporting surface and the rollers of the roller wheel.STATE OF THE ART[0002]A peristaltic hose pump of the aforementioned design is known from DE-G 83 29 579. Here the pressure arched element is formed by a deformable band, the one end of which is firmly clamped, while its other end is adjustably held in its axial direction, which facilitates the adaptation to different hose diameters. The band made of...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): F04B43/12
CPCF04B43/1284F05C2225/00
Inventor HASER, CHRISTIANZENTNER, PETER
Owner W O M WORLD OF MEDICINE GMBH
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